Gearing for windmills



' (NoModeL) G. M. ALLEN.

GEARING POR- WINDMILLS.

v Patented Nov. 24, 1891 NITED STATES PATENT @FFICR.

GEORGE M. ALLEN, OF BELOL I, IVISCONSIN.

GEARING FOR WINDMILLS.

SPECIFICATION forming part of Letters Patent No. 463,980, dated November24, 1891.

7 Application filed February 19, 1891- Serial No. 382,122- @0 model.)

To aZZ whom it may concern:

Be it known that I, GEORGE M. ALLEN, a citizen of the United States ofAmerica, residing at Beloit, in the county of Rock and State ofWisconsin, have invented a certain new and useful Improvement in Gearingfor Windmills, of which the following is a specification.

Referring to the accompanying drawings, in which like reference-lettersindicate like parts, Figure l is an end elevation; Fig. 2, a sideelevation, and Fig. 3 a detail of the engaging-pin.

In windmills employed for pumping Water it is sometimes desirable toutilize about two revolutions of the wind-wheel in lifting the pnmprodto one in lowering it. This has been done in various ways by differentforms of mechanism.

My invention consists in a new means for accomplishing the resultreferred to ,and the principle of the invention consists in theemployment of two wheels of different diameter fixed upon thedriving-shaft, in combination with two circular segment-disks ofdifferent diameter rigidly connected to each other upon a separate axisof rotation, so that as the driving-shaft rotates the larger disk willgear with the smaller wheel and the smaller disk with the larger Wheelalternately, the pump-rod being actuated by a pitman connected to awrist-pin on one of the disks or by other equivalent device, as I willnow pro ceed to explain in detail.

In the drawings, A is the mill-head; B, the pump-rod; O, the wind-wheelshaft; D, a small pinion fixed to the wind-wheel shaft; E, a largerpinion, also fixed to the wind-wheel shaft or the wheel D; F, a shaft orstud independent of shaft 0, but parallel thereto; G, a circularsegment-disk (preferably semicircular) mounted upon shaft F and gearingwith pinion D, and H a smaller circular segmentdisk mounted upon shaftFand so connected to disk G as to rotate therewith and gearing with thelarger pinion E. It is immaterial whether the wheels D E are attachedrigidly to each other or each rigidly to the shaft 0,

and whether the two disks G H are attached rigidly to each other andmounted loose on a fixed stud, in which case a wrist-pin t' and pitman Imust be employed to communicate motion from them to the pump-rod, orwhether they are each attached rigidly to one and the same shaft, inwhich case a crank and pitman or eccentric and strap may be employed tocommunicate motion to the pump-rod. The difference in diameter of thetwo pinions, which may be varied as desired, determines the differencein radius of the two disks, the sum of the radii of the large disk andsmall pinion being equal to that of the small disk and large pinion, andeach sum equal to the distance between the two axes of rotation.

In lifting the pump-rod the small pinion gears with the large disk, andthus gives slow movement and great power. When the rod has reached theupper limit of its traverse, the large disk and small pinion disengage,and the small disk and large pinion engage, giving a quick downstroke tothe rod.

To insure the proper alternative engagements of the disks and pinions,either of the pinions may be provided with a suitable projectionor-projections to strike the edge of one of the disks or some projectionthereon, and thus bring the two disks around properly for the change ofengagement.

Having thus described my invention,'what I claim as new, and desire tosecure by Letters Patent, is-- In a windmill, the combination of thewindwheel and pump-rod with two pinions of different diameters rotatingtogether and with the two circular segment-disks of different radiusrotating together upon an axis of n10- tion parallel to that of thepinions and driven by said pinions through the alternate engagement ofthe small pinion and large disk and the large pinion and smalldisk,substantially as described.

GEORGE M. ALLEN.

Witnesses:

W. M HILL, FRANCIS E. DRESSER.

